Synthesis, Characterization and Reactivity of Ylidyne and μ-Ylido Complexes Supported by Scorpionato Ligands PDF Download
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Author: Priyabrata Ghana
Publisher: Springer
ISBN: 3030026256
Category : Science
Languages : en
Pages : 344
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Book Description
This book explores the development of the first open-shell heavier tetrylidyne complexes featuring a tetrel-centered unpaired electron, and unprecedented metallatetrylidynes containing a multiply-bonded, linear-coordinated single heavier tetrel atom embedded between two metal centers. The chemistry of compounds featuring triple bonds of the heavier Group-14 elements Si–Pb with transition metals is a very challenging research area, which combines modern molecular main-group element with transition-metal chemistry, and is of fundamental importance for the understanding of chemical bonding. During the last 15 years, the research in this area has witnessed considerable progress in isolating a series of closed-shell tetrylidyne complexes. However, despite numerous attempts, open-shell tetrylidyne complexes and heavier group 14 element congeners of metallacarbynes and carbide complexes remained inaccessible. In this book, readers will find more about the synthesis, full characterization and reactivity studies of these novel complexes that uncovered a plethora of exceptional products, including a novel m3-silicido complex, the first dimetallasilacumulene with a linear, two-coordinated single silicon atom and the first compounds of planar tetracoordinated silicon (ptSi) (Anti-van’t Hoff-Le Bell Silicon). Readers will also learn about the isolation and full characterization of the first room-temperature stable disilavinylidene, a silicon analogue of the very reactive vinylidenes (R2C=C:), and the first intermetallic plumbylidyne ligand transfer reactions.
Author: Priyabrata Ghana
Publisher: Springer
ISBN: 3030026256
Category : Science
Languages : en
Pages : 344
Get Book Here
Book Description
This book explores the development of the first open-shell heavier tetrylidyne complexes featuring a tetrel-centered unpaired electron, and unprecedented metallatetrylidynes containing a multiply-bonded, linear-coordinated single heavier tetrel atom embedded between two metal centers. The chemistry of compounds featuring triple bonds of the heavier Group-14 elements Si–Pb with transition metals is a very challenging research area, which combines modern molecular main-group element with transition-metal chemistry, and is of fundamental importance for the understanding of chemical bonding. During the last 15 years, the research in this area has witnessed considerable progress in isolating a series of closed-shell tetrylidyne complexes. However, despite numerous attempts, open-shell tetrylidyne complexes and heavier group 14 element congeners of metallacarbynes and carbide complexes remained inaccessible. In this book, readers will find more about the synthesis, full characterization and reactivity studies of these novel complexes that uncovered a plethora of exceptional products, including a novel m3-silicido complex, the first dimetallasilacumulene with a linear, two-coordinated single silicon atom and the first compounds of planar tetracoordinated silicon (ptSi) (Anti-van’t Hoff-Le Bell Silicon). Readers will also learn about the isolation and full characterization of the first room-temperature stable disilavinylidene, a silicon analogue of the very reactive vinylidenes (R2C=C:), and the first intermetallic plumbylidyne ligand transfer reactions.
Author: Cassandra E. Hayes
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 0
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Book Description
This thesis explores the coordination chemistry of diamido-actinide complexes and establishes them as active catalysts for a number of transformations. The synthesis, characterization and reactivity studies of a series of diamido-ether actinide complexes are described. The focus of these studies include the use of two different ligand frameworks: a silyl ether backbone of the form [(RNHSiMe2)2O] ([RNON]H2; R = tBu, 2,6-iPr2Ph, 2,4,6-Me3Ph), and an alkyl ether backbone of the form [(RNHCH2CH2)2O] ([RNCOCN]H2; R = 2,6-iPr2Ph). A series of diamido-ether actinide halide complexes supported by these ligands can be prepared through the addition of either [RNON]Li2 or [RNCOCN]Li2 to UCl4 or ThCl420222DME. These halide complexes can then be alkylated via the addition of appropriate alkylating reagents such as LiCH2SiMe3, LiCH(SiMe3)2 or KCHPh. A series of new diamido-actinide alkoxide complexes has also been prepared from the addition of alkoxide reagents such as LiOiPr or KOtBu. These diamido-actinide alkyl complexes are explored as catalysts for ethylene polymerization, lactide polymerization, and intramolecular hydroamination. In all cases, these alkyl complexes are found to be active catalysts, but in each instance, different complexes are established as the most active species. The mixed-donor amido-amino-siloxo ligands [(RN(Li)SiMe2N(R)SiMe2O] ([RNNO]Li2; R = 2,6-iPr2Ph, 2,4,6-Me3Ph), are also used to prepare a series of new actinide-based complexes. The addition of one equivalent of ligand per metal centre yields "ate" complexes that retain solvent and salt in the coordination sphere of the metal while the addition of two equivalents of ligand per metal centre yields bis(amido-siloxo)actinide-based products. These complexes, like their diamido counterparts, can be alkylated through the addition of appropriate alkylating reagents such as LiCH2SiMe3. Lastly, oxidation reactions with {[tBuNON]UCl2}2, [iPr2PhNCOCN]UCl3Li•THF and [Me3PhNNO]2U are described. The preparation of two non-uranyl U(VI) complexes from the oxidation of {[tBuNON]UCl2}2 are reported. Furthermore, the oxidation of [Me3PhNNO]2U yields a new, ligand-activated U(V) complex.
Author: F. Albert Cotton
Publisher: Springer Science & Business Media
ISBN: 9780387250847
Category : Science
Languages : en
Pages : 856
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Book Description
Provides historical perspective as well as current data Abundantly illustrated with figures redrawn from literature data Covers all pertinent theory and physical chemistry Catalytic and chemotherapeutic applications are included
Author: Burgert Blom
Publisher:
ISBN: 9783869559070
Category : Transition metal compounds
Languages : en
Pages : 308
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Book Description
Author: James Marson
Publisher: Oxford University Press, USA
ISBN: 0198727348
Category : Business & Economics
Languages : en
Pages : 661
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Book Description
Marson and Ferris' Business Law provides a thorough account of the subject for students on Business degrees. It introduces students to the essential topics by exploring current and pertinent examples. It emphasizes the importance of cases and demonstrates the relevance of the law in a business environment.
Author: W. Jeremy Counseller
Publisher: Aspen Publishing
ISBN: 1543820921
Category : Law
Languages : en
Pages : 902
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Book Description
Civil Procedure in Focus by Jeremy Counseller and Eric Porterfield uses a combination of accessible explanatory text, cases, and other primary legal sources to teach civil procedure, and then provides opportunities for students to apply the law to multiple sets of facts in every chapter. Selected cases illustrate key changes in the law and show how courts have developed and apply doctrine. The unintimidating approach of this casebook provides a hands-on, experiential learning environment that can be essential to many students’ success. Through practice-based exercises, students learn to apply legal principles and concepts to real-world scenarios. Simply knowing the facts of a benchmark case is not enough; knowing how to apply the doctrine from one case to a different set of facts enhances a` student’s ability to succeed in and after law school. New to the Second Edition: Multiple-choice questions at the end of each chapter Discussion of “Snap Removal,” a hot topic currently percolating through the federal court system Updates regarding recent US Supreme Court cases regarding personal jurisdiction Professors and students will benefit from: Applying the Concepts and Civil Procedure in Practice exercises. These end-of-chapter exercises encourage students to synthesize the chapter material and apply relevant legal doctrine and code to real-world scenarios. Students can use these exercises for self-assessment or the professor can use them to promote class interaction. Real Life Applications. Every case in a chapter is followed by Real Life Applications, which present a series of questions based on a scenario similar to the facts in the case. Real Life Applications challenge students to apply what they have learned and help prepare them for real-world practice. Professors can use Real Life Applications to spark class discussions or provide them as individual short-answer assignments. Case Previews and Post-Case Follow-Ups. To succeed, law students must know how to deconstruct and analyze cases. Case Previews highlight the legal concepts in a case before the student reads it. Post-Case Follow-Ups summarize the important points and go one step further—noting the significance of a case to current law as well as its later ramifications. Clear exposition of key concepts in the text that means professors can spend less class time lecturing students on the basics and more time discussing different perspectives on the law, current issues, etc. Essay, short-answer, and multiple-choice questions in every chapter Practice-based hypotheticals that challenge students to apply doctrine to different fact scenarios Exhibits that highlight the relevant rule of law and corresponding legal authority
Author: Patrick M. Jenlink
Publisher: Rowman & Littlefield
ISBN: 1475854846
Category : Education
Languages : en
Pages : 163
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Book Description
A Commitment to Teaching: Toward More Efficacious Teacher Preparation introduces the reader to a collection of thoughtful works by authors that represent current research and thinking about teacher self-efficacy and teacher preparation. It is the intent of the book to provide the reader with current and relevant knowledge concerning preparation of committed and efficacious teachers. Teacher self-efficacy, and the presence of teacher efficacy, in teacher preparation and practice, is fundamental to preparing teachers for the public school classroom. As a construct, teacher self-efficacy beliefs are an integral aspect of the teaching process. While many authors refer to teachers’ sense of self-efficacy for teaching, meaning their beliefs about their ability to perform the actions necessary to teach, many others have identified a specific form of self-efficacy pertaining to teaching. These have been called teaching or teacher efficacy. Chapter One opens the book with a focus on the teacher commitment and self-efficacy, providing the reader with an introduction. The authors of Chapters Two-Seven present field-based research that examines the complexities efficacy and commitment in the preparation of teachers. Each chapter offers the reader an examination of teacher self-efficacy and teacher preparation and based on formal research that provides the reader with insight into how the research study was conducted as well as equally important, the findings and conclusions drawn with respect teacher self-efficacy and teacher preparation. Finally, Chapter Nine presents an epilogue that focuses on the for more efficacious teacher preparation.
Author: Neeraj Kumar
Publisher: CRC Press
ISBN: 1000767590
Category : Computers
Languages : en
Pages : 319
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Book Description
This book covers the different technologies of Internet, and machine learning capabilities involved in Cognitive Internet of Things (CIoT). Machine learning is explored by covering all the technical issues and various models used for data analytics during decision making at different steps. It initiates with IoT basics, its history, architecture and applications followed by capabilities of CIoT in real world and description of machine learning (ML) in data mining. Further, it explains various ML techniques and paradigms with different phases of data pre-processing and feature engineering. Each chapter includes sample questions to help understand concepts of ML used in different applications. Explains integration of Machine Learning in IoT for building an efficient decision support system Covers IoT, CIoT, machine learning paradigms and models Includes implementation of machine learning models in R Help the analysts and developers to work efficiently with emerging technologies such as data analytics, data processing, Big Data, Robotics Includes programming codes in Python/Matlab/R alongwith practical examples, questions and multiple choice questions
Author: China Development Research Foundation
Publisher: Routledge
ISBN: 100002556X
Category : Business & Economics
Languages : en
Pages : 261
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Book Description
This book examines China’s resource endowment and the country’s current exploitation and use of resources and analyzes the main challenges and potential opportunities facing the country. It then discusses how to improve the efficiency with which resources are used by taking a ‘full-life-cycle’ approach to resource use. After summing up the evolution of China’s policies and systems relating to resources and the environment, this book goes on to study how China’s participation in global resource allocation and global resource governance has progressed under its open-economy situation, as well as challenges facing that participation. Based on all these analysis, the report proposes two targets for managing the total quantities of two specific metrics. That is, it recommends aiming to reach peak consumption of resources and peak emission of pollutants by 2030. In addition, it makes a number of specific policy recommendations. The China Development Research Foundation (CDRF) is a public foundation initiated by the Development Research Center of the State Council (DRC). Its mission is to advance good governance and public policy to promote economic development and social progress. The Foundation has approached its mandate in a number of ways, including support for evidence-based policy research, leadership training, high-level forums and symposiums to promote economic cooperation and development, and the promotion of responsible public policy. As China continues to move steadily ahead with policy reforms and investments for more inclusive development, the demands for research, transparent and accountable processes, and citizenship engagement are expanding. The Foundation is striving to meet these challenges and to coordinate policy research work which supports the work of government, civil society and enterprises in furthering equitable development in China.
Author: Christopher Cramer
Publisher: Oxford University Press
ISBN: 0198832338
Category : Business & Economics
Languages : en
Pages : 334
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Book Description
"This book challenges conventional wisdoms about economic performance and possible policies for economic development in African countries. Its starting point is the striking variation in African economic performance. Unevenness and inequalities form a central fact of African economic experiences. The authors highlight not only differences between countries, but also variations within countries, differences often organized around distinctions of gender, class, and ethnic identity. For example, neo-natal mortality and school dropout have been reduced, particularly for some classes of women in some areas of Africa. Horticultural and agribusiness exports have grown far more rapidly in some countries than in others. These variations (and many others) point to opportunities for changing performance, reducing inequalities, learning from other policy experiences, and escaping the ties of structure, and the legacies of a colonial past. The book rejects teleological illusions and Eurocentric prejudice, but it does pay close attention to the results of policy in more industrialized parts of the world. Seeing the contradictions of capitalism for what they are - fundamental and enduring - may help policy officials protect themselves against the misleading idea that development can be expected to be a smooth, linear process, or that it would be were certain impediments suddenly removed. The authors criticize a wide range of orthodox and heterodox economists, especially for their cavalier attitude to evidence. Drawing on their own decades of research and policy experience, they combine careful use of available evidence from a range of African countries with political economy insights (mainly derived from Kalecki, Kaldor and Hischman) to make the policy case for specific types of public sector investment"--
